C.J. McCollum for Aaron Gordon and Terrence Ross.
Who says no (other than Neil Olshey, because, damnit, he's sticking to his guns)?
That'd give you a starting lineup of Lillard, Trent, Ross/Hood, Gordon and Nurkic. Collins, backup PG, Ariza, backup big. Still not contending for a championship, but at least it's more balanced. Shooting would probably be light, but at least they could play passable, possibly even good, defense.
The more I think about it, the less I like it. I do like Orlando as a trading partner. They have lots of secondary pieces. If you could get two (or one Jonathan Isaac) for McCollum, I'd think you could improve the Blazers a bit.